His health has been declining, and twin daughters Sarah and Becca started to worry their father wouldn't be around for their wedding.

Aware that their time with their father is running out, they got the idea to stage a wedding photo shoot even though neither of them is engaged.

"We knew there was a big chance dad wouldn't be there for our weddings. So we thought to take these photos so we could always have them. He got to see us in dresses and we will forever hold that memory," Sarah Duncan told FOX 8.

Their mother called up family friend Lindsey Rabon and asked if she would do the shoot. “I absolutely loved this idea. The second she pitched it my wheels began to turn,” Rabon said.

They did the photo shoot at their home because the twins were concerned putting their dad in a different environment would be too stressful for him.

The girls wore wedding dresses, and they got to experience the joy of their “wedding day” with their father.

“I was fortunate enough to experience that first hand, and my dad’s tear filled eyes are a moment I will never forget. But some women, are not given that same opportunity. And while it’s not a replacement for the real thing, I hope that for this moment, they enjoyed this time with their father,” said Rabon.

“There has been quite the buzz around these images lately. Photography is so much more to me then a click of a button and an image on paper. Its a reflection of our life, and our time here with our family. Its capturing milestones, or in some cases missed milestones. I was so happy Becca and Sarah trusted me to capture this time, however fleeting, with their father.”

Sarah and Becca were recently named honorary chairmen of the Walk to End Alzheimer’s to help raise awareness of Alzheimer’s disease.